Arrow keys or WASD, you can also press space to jump. If you have ideas for different levels, I would LOVE to hear them.
This uses the same platformer physics that I used a long long time ago, but my next project will use this and I hope it will turn out as well as I hope. I'm releasing this project just in case the thing I want to do with my next one actually screws it up, I have this as a backup.